Tuesday
July 29, 2014

Posts by Sam


Total # Posts: 3,941

Physics
While working on her bike, Amanita turns it upside down and gives the front wheel a counterclockwise spin. It spins at approximately constant speed for a few seconds. During this portion of the motion, she records the x and y positions and velocities, as well as the angular po...

Economics
Market analysts often use cross-price elasticities to determine a measure of the “competitiveness” of a particular good in a market. How might cross-price elasticities be used in this manner? What would you expect the cross-price elasticity coefficient to be if the m...

Economics
Indicate how an understanding of demand and of elasticity of demand is useful in analysing the following statement. “If total consumer expenditure remains the same after a new tax is imposed on cigarettes then spending on cigarettes will decrease and spending on other goo...

Math
when doing formula p=2L+2w how do you do the problem L=2meters and w=1/2 meters and p=?

health
help please

math
4 boards (1 inch X 8inchs X 6feet} and 3 boards (1 inch X 6 inches x 4feet}= how many board feet? 1 board foot =1 inch by 12 inches x 12inches

math
Thank you so much.

math
The formaula works for a rectangle, but this is a circle. How do you convert sides of a circle? The answer is $176.63, but I can't "make it fit".

math
carpet is $25 per square yard. what is cost of circulare rug 9ft in diameter?

math
Thank you, it works.

math
steel is $50 per cubic foot. What is cost of cone with radius 7.5 inches and 25 inches height?

math
-6x+5+5=47 -6x+10=47 -6x +10-10=47-10 -6x=37 --- --- -6 -6 x=37/-6 x=-37/6 check by putting -6(-37/6)+5+5=47. It will balance

chemsitry
hydrogen burns in oxygen to for water.caculate the volume?

chemistry
i had 2 question left to finish but i cant really undersdand how to do it 9)design an elextrochemical cell using Pb(s) and Mn(s) and theire solutions and answer the following questions: i answerd a-i all that is left is j which is: indicate the substance oxidise,substance redu...

math
elimination method -3x+4y=19.5 -3x+y=10.5

gemetry
suppose that A=(58,3,4),B=(-2,18,24),and C=(-2,3,4) is triangle ABC a right triangle

Chemistry
What is the freezing point of a solution that contains 10.0 g of glucose (C6H12O6) in 100 g of H2O? Kf for water is 1.86oC/m

Chemistry II
A solution is made by mixing 38.0 mL of ethanol, C2H6O, and 62.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C?

Chemistry II
Quinine is a natural product extracted from the bark of the cinchona tree, which is native to South America. Quinine is used as an antimalarial agent. When 3.28 g of quinine is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 8.43 °C. Th...

MAth
An ice cream cone is 3 inches wide at the widest point, and is 6 inches tall. What is the volume of the cone in cubic inches? Use Pi

math
Solve the problem by stating the equation you would use to solve and then solving it. Be sure to show all of your work. In a local election, 53,400 people voted. This was a decrease of 7% over the last election. How many people voted in the last election? Round to the nearest ...

Chemistry
How many grams of calcium phosphate are theoretically produced if we start with 10.3 moles of Ca(NO3)2 and 7.6 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 → 6LiNO3 + Ca3(PO4)2

Chemistry
Reaction: 3Ca(NO3)2 + 2Li3PO4 → 6LiNO3 + Ca3(PO4)2

Chemistry
How many grams of calcium phosphate are theoretically produced if we start with 10.3 moles of Ca(NO3)2 and 7.6 moles of Li3PO4?

history
9. Elias Howe invented which of the following?

AFM (MATH)
a) Write an equation to represent the volume of an open box constructed by cutting congruent squares from the corners of a 24" by 14" piece of cardboard. b) What is the domain of this model?

English12
Below, you will find a list of sentences. After each sentence, select true if the topic of the statement is suitable to form the basis of a single persuasive paragraph. If the topic of the statement in your textbook is unsuitable for a single persuasive paragraph, select false...

reading
i say sunrise

THE AGE OF DISCOVERY TO THE AMERICAN EXPERIMENT
Thank you

Social Studies
1. For revolutionaries like Sam Adams, the term _______ embraced a way of life, a core ideology, and an uncompromising commitment to liberty and equality. A. independency B. republicanism C. federalism D. Americanism 2. Which of the following best describes the Columbian Excha...

economics
Determine the sum of money that must be invested today at 9% interest compounded annually to give an investor annuity (annual income) payments of $5,000 per year for 10 years starting 5 years from now.

Geomtry
Find the length of segment CE if AE = 8 inches, EB = 10 inches, and ED = 5 inches.

Stat
The salaries at a corporation are normally distributed with an average salary of $29,000 and a standard deviation of $4,000. What is the probability that an employee will have a salary between $22,520 and $23,480? Enter your answer rounded to exactly 4 decimal places.

calculus
The salaries at a corporation are normally distributed with an average salary of $29,000 and a standard deviation of $4,000. Sixteen percent of the employees make more than Sara. What is Sara's salary? Round your answer to the nearest dollar.

Calculus
Thanks a lot for your help, Count Iblis! :)

Calculus
Evaluate the integral: 16csc(x) dx from pi/2 to pi (and determine if it is convergent or divergent). I know how to find the indefinite integral of csc(x) dx, but I do not know how to evaluate the improper integral, at the following particular step. I know I need to take the li...

Reimbursement methodologies
CMS-1450 There is no form ub-4. there is UB-04 CMS_1450 form for out patient claims UB-92 MANAGED CARE

Calculus
Thank you for your help, Bob. I will be more clear regarding exactly where I do not understand. I know I need to take the limit on the upper bound (e.g. A) as it approaches pi from the left side. After doing so, I get ln|csc(x)+cot(x)|. Approaching pi from the left side, I get...

Calculus
Evaluate the integral: 16csc(x) dx from pi/2 to pi (and determine if it is convergent or divergent). I know how to find the indefinite integral of csc(x) dx, but I do not know how to evaluate the improper integral.

math
Let A=number of animals, D=number of dogs, B=number of bunnies, and C=number of cats. Given: 1/2*A = D 1/4*A = B C = 6 C = B Solution: C=B=6 1/4*A=B=6 1/4*A=6 A=6*4=24 D=1/2*A D=1/2*24 D=12 Therefore, there are 12 dogs.

math
You need to post the options given in the question. For instance, the folloiwng are proper ways to express the teacher-student ratio: 1:20, 1/20, 0.05

Probability
Two number cubes are rolled .both cubes are Labelled to 6. The numers rolled are added . What is the probability of each outcome? A) the sum is 12. B) the sum is less then 4. C) the sum is 7. D) the sum is 2.

Probability
Two cubes are rolled .both cubes are labelled 1 to 6.the number rolled are added. What is the probability of each out come ? a) sum is 12 B)the sum is less than 4. C)the sum is 7. D)the sum is 2.

chemistry
the reaction of N2+3H2-->2NH3 is used to produce ammonia commercially. if 1.40 g of N2 are used in the reaction, how many grams of H2 will be needed?

physics
A 0.93 kg block is shot horizontally from a spring, as in the example above, and travels 0.539 m up a long a frictionless ramp before coming to rest and sliding back down. If the ramp makes an angle of 45.0° with respect to the horizontal, and the spring originally was com...

Precal
What is the standard form of this parabola: -2x^2+16x+24y-224=0 Please Help, parabolas are evil.

Maths
An irregular octagon R has vertices 6, 2), (2, 6), (−1, 5), (−5, 1), (−6, −2), (−2, −6), (1, −5) and (5, −1). Using standard notation, write down the elements of the symmetry group S(R) of R, giving a brief description of the geo...

Introduction to Ethics& Social Responsibility
The outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore needs to be changed...

algebra
Renee belongs to a bowling club. She scores 50, 52, 55, and 59 on her first four games. She hopes to continue improving according to this pattern. Part A: What are the next four terms in Renee’s sequence? Part B: Write an recursive function rule for the sequence? Part C: ...

physics
Water is to be pumped to the top of a skyscraper, which is 1270 ft high. What gauge pressure is needed in the water line at the base of the building to raise the water to this height?

8th grade math
how do you solve x+1/10= a whole number

Calculus
I need help with these two review calculus problems for my final exam. What is the derivative of a). (5x^2+9x-7)^5 b). Lne^x^3 For a. I got 50x+45(5x^5+9x-7)^4 For b. I got 3x^2 Can you verify please?

Calculus
Thank you so so much! I finally understand what to do! :)

Calculus
I am not sure what to do here: Find the derivative (f '(x) using the limit process a). f(x)= 2x^2+5x+2 find f ' (2) b.) Find the equation of the Tangent Line at (1,5)

culture
Mutually Assured Destruction" is a policy based on which game theory strateg

Calculus
HOw do I find the domain of f(x)= x^2+3x+5?

Chemistry
Pb(NO3)2(aq) 2 x 10-3 M and Na2SO4(aq) 2 x 10-3 M Identify the ions that are present in each solution, and calculate their concentrations. If 1 L of each solution are mixed, will a precipitate be formed? Why?

Chemistry
Pb(NO3)2(aq) + NaSO4(aq) → PbSO4(s)+ 2NaNO3(aq) Identify the ions that are present in each solution, and calculate their concentrations.

geometry
89

geometry
12

math
solve equation. 2p^2-50=0 PLEASE HELP

Math
multiply: -4x^3(6x-3x^4) show your work. please help me!!

MATH
When adding or subtacting polynomials, what is very important to remember? PLEASE HELP

Math
what is 18x^5+3x^3+6x after it is divided by 3x? show your work. PLEASE HELP MEEE

Math
What is the result when (4x^2-5x+7) is added to (x^2-3x-6)? show your work. PLEASE HELP ME!!

Math
multiply: a)(2x+5)(2x-5) b) -4x^3(6x-3x^4) show your work. please help me!!

Math
what is the result when 2x^2+3xy-6 is subtracted from x^2-7xy+2? show your work. please help me!

Mathematics
ok but could you give me an example of what state in terms of h means

Mathematics
a cuboid with length 13cm width 4cm and height h State in terms of h the shaded face of the cuboid. write an expression in terms of h for the volume of the cuboid. if the volume of the cuboid is 286cm cube calculate the height h of the cuboid.

trig
I don't understand how to fnd it though Reiny :( perhaps you could help?

trig
Determine whether the vectors are parallel, perpendicular or neither. 1) v = (4,1), w = (1,-4) 2) v = (2,3), w = (4,6) 3) v = (2,3), w = (3,-3) Please and thanks!

trig
Find the component form for vector v with the given amplitude and direction angle theta. |v|=20.6, theta=102.5deg

trig
Find the dot product of u and v u= 3i+7j v= 11i-5j

MATH
What is the measure of each angle in a Googolgon

Statistics
Suppose it can be assumed that 60 percent of adults favor capital punishment. Find the probability that on a jury of twelve members: a) All will favor capital punishment. b) There will be a tie.

Mathematics
how to find the length of a triangular prism? when the volume is 1470cm cube the height is 10.5cm base 14cm

algebra 2
Sorry, that wasn't one of the choices!!!! Hopefully someone who knows their algebra can help me answer it correctly :-)

algebra 2
Graph the equation. Identify the vertices, co-vertices, and foci of the ellipse. 64x^2+16y^2=1024 This is what i have so far vertices (0,8)(0,-8) foci(0,4√3),(0,-4√3)

algebra 2
Graph the equation. Identify the vertices, foci, and asymptotes of the hyperbola. Y^2/16-x^2/36=1 I think....vertices (0,4),(0,-4) foci??? asymptotes y=+/- 2x/3

algebra 2
Write an equation of the hyperbola with vertices at (–7, 0) and (7, 0) and foci at (–9, 0) and (9, 0)

algebra 2
Write an equation of an ellipse with center at (0, 0), co-vertex at (-4 , 0), and focus at (0, 3). I think its... X^2/16+y^2/9=1

algebra 2
Write an equation of the hyperbola with foci (0, -2) and (0, 2) and vertices of (0, -1) and (0, 1).

algebra 2
Write an equation of the ellipse with center at (0, 0), vertex at (4, 0), and co-vertex at (0, 2)

algebra 2
Thank you very much!!

algebra 2
A swimming pool in the shape of an ellipse is modeled by x^2/324+y^2/196=1, where x and y are measured in feet. Find the shortest distance (in feet) across the center of the pool? i think its 28 feet....

algebra 2
Thank you :-)

algebra 2
What is the equation of an ellipse with a vertex of (0, 3) and a co-vertex of (-2 , 0)? i think its 9x^2+4y^2=36...not sure

algebra 2
Is it (0,±6)?

algebra 2
Thank you again.

algebra 2
Write an equation in standard form for the hyperbola with center (0,0), vertex(4,0) , and focus (8,0). 1) x^2/64-x^2/16=1 2)x^2/16-y^2/64=1 3)y^2/48-x^2/16=1 4)x^2/16-y^2/48=1

algebra 2
That isn't one of the choses... 1) x^2/64-x^2/16=1 2)x^2/16-y^2/64=1 3)y^2/48-x^2/16=1 4)x^2/16-y^2/48=1

algebra 2
Write an equation in standard form for the hyperbola with center (0,0), vertex(4,0) , and focus (8,0).

medical transcription
Im working on a transcription and i know this sentance is not right but i cant figure out how to spell it correctly can any one tell me what it is or how to spell it so i can look it up thx what i need help on is the last word heart regular rate and rhythm normal S1, S2 dimers...

algebra 2
When you spend $1 at the grocery store, the store doesn’t keep all of your money as profit. Some of it is reinvested in the economy when the grocery store buys more merchandise from suppliers. In turn, the suppliers don’t keep all of that money as profit, either; the...

chemistry
Compare and contrast the ideas of heat and temperature. Explain how one affects the others and why they are not the same thing.

Algebra
Window World, Inc. is responsible for designing windows for the expansion of the campus chapel. The current design is shown in the figure. The metal trim used to secure the perimeter of the frame is 126 inches long. If the maximum window area is desired, what will be the dimen...

trig
find the math product of u and v u= (6,7) v= (-3,9)

MAth
A 13 foot ladder is resting against the wall. The bottom is initially 10 feet away from the wall and is being pushed towards the wall at a rate of 0.25 ft/sec. How fast is the top of the ladder moving up the wall 20 seconds after we start pushing? Hint: the hypotenuse (ladder)...

pre-calc
tanx= -12/5 x in Q 2. find sin2x= cos2x= tan2x=

Stats
A random sample of n=500 households in a certain metropolitan area revealed that 150 have combined cable, phone and internet service. a.Calculate p-hat, the sample proportion of households having such service. b.Calculate a confidence interval for π, the proportion of all...

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